What size are my drims?

[85Ram50]

I'm finally doing this I've been way distracted. If I hadn't dinged up that fender I might still be procrastinating
Any vids on these particular drums? I can't see under well and I want to know exactly what it should look like when I set them as its no fun getting down like that. Man they were full of dirt and dust it piled up a few inches deep! but the drum and springs look only a couple years old? I've had it for about 14 and never did them as I got it at 80K and have only put 30K on it. I think I will still install the new drums just to be sure as it was locking up when I let it set for a month or more last winter. Anyway got one Gabriel Spring assist shock on, new wheel cylinder and part of the new shoe set.

EDIT- Just found this diagram http://www.mightyram50.net/vbulletin...3&d=1374636952

The diagram doesn't seem to have all the same bits my drum has.